Files
vhdl/lib/CPUs/MIPS/src/irom_test_slti.vhd
T
jens 335cc4e9d2 Initial import
git-svn-id: http://moon:8086/svn/vhdl/trunk@2 cc03376c-175c-47c8-b038-4cd826a8556b
2008-08-23 07:19:47 +00:00

122 lines
5.0 KiB
VHDL

-------------------------------------------------------------------------
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
-- This file: The ROM file for use in your VHDL design
--
-- Copyright (C) 2007 J. Ahrensfeld
--
-- This program is free software: you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation, either version 3 of the License, or
-- (at your option) any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
--
-- For questions and ideas, please contact the author at jens@jayfield.org
--
--------------------------------------------------------------------------
LIBRARY ieee;
use IEEE.STD_LOGIC_1164.ALL;
USE ieee.numeric_std.ALL;
ENTITY rom IS
Generic
(
addr_width : integer := 2;
data_width : integer := 32
);
Port
(
addr : in unsigned(addr_width-1 downto 0);
dout : out unsigned(data_width-1 downto 0)
);
END rom;
ARCHITECTURE itest OF rom IS
subtype word_t is unsigned(data_width-1 downto 0);
type word_array_t is array (0 to 2**addr_width-1) of word_t;
-- Assembled from itest.jsm
constant word_array : word_array_t :=
(
X"3c011234", -- [0x00400000] lui $1, 4660
X"34225678", -- [0x00400004] ori $2, $1, 22136
X"3c012345", -- [0x00400008] lui $1, 9029
X"34236789", -- [0x0040000c] ori $3, $1, 26505
X"3c018765", -- [0x00400010] lui $1, -30875
X"34244321", -- [0x00400014] ori $4, $1, 17185
X"3c019876", -- [0x00400018] lui $1, -26506
X"34255432", -- [0x0040001c] ori $5, $1, 21554
X"3c081000", -- [0x00400020] lui $8, 4096
X"00000000", -- [0x00400024] nop
X"2c4f1234", -- [0x00400028] sltiu $15, $2, 4660
X"2c4f2345", -- [0x0040002c] sltiu $15, $2, 9029
X"2c4fedcc", -- [0x00400030] sltiu $15, $2, -4660
X"2c4fdcbb", -- [0x00400034] sltiu $15, $2, -9029
X"2c6f1234", -- [0x00400038] sltiu $15, $3, 4660
X"2c6f2345", -- [0x0040003c] sltiu $15, $3, 9029
X"2c6fedcc", -- [0x00400040] sltiu $15, $3, -4660
X"2c6fdcbb", -- [0x00400044] sltiu $15, $3, -9029
X"2c8f1234", -- [0x00400048] sltiu $15, $4, 4660
X"2c8f2345", -- [0x0040004c] sltiu $15, $4, 9029
X"2c8fedcc", -- [0x00400050] sltiu $15, $4, -4660
X"2c8fdcbb", -- [0x00400054] sltiu $15, $4, -9029
X"2caf1234", -- [0x00400058] sltiu $15, $5, 4660
X"2caf2345", -- [0x0040005c] sltiu $15, $5, 9029
X"2cafedcc", -- [0x00400060] sltiu $15, $5, -4660
X"2cafdcbb", -- [0x00400064] sltiu $15, $5, -9029
X"00000000", -- [0x00400068] nop
X"284f1234", -- [0x0040006c] slti $15, $2, 4660
X"284f2345", -- [0x00400070] slti $15, $2, 9029
X"284fedcc", -- [0x00400074] slti $15, $2, -4660
X"284fdcbb", -- [0x00400078] slti $15, $2, -9029
X"286f1234", -- [0x0040007c] slti $15, $3, 4660
X"286f2345", -- [0x00400080] slti $15, $3, 9029
X"286fedcc", -- [0x00400084] slti $15, $3, -4660
X"286fdcbb", -- [0x00400088] slti $15, $3, -9029
X"288f1234", -- [0x0040008c] slti $15, $4, 4660
X"288f2345", -- [0x00400090] slti $15, $4, 9029
X"288fedcc", -- [0x00400094] slti $15, $4, -4660
X"288fdcbb", -- [0x00400098] slti $15, $4, -9029
X"28af1234", -- [0x0040009c] slti $15, $5, 4660
X"28af2345", -- [0x004000a0] slti $15, $5, 9029
X"28afedcc", -- [0x004000a4] slti $15, $5, -4660
X"28afdcbb", -- [0x004000a8] slti $15, $5, -9029
X"00000000", -- [0x004000ac] nop
X"08104000", -- [0x004000b0] j 0x00410000 [main]
X"00000000", -- [0x004000b4] nop
X"00000000", -- [0x004000b8]
X"00000000", -- [0x004000bc]
X"00000000", -- [0x004000c0]
X"00000000", -- [0x004000c4]
X"00000000", -- [0x004000c8]
X"00000000", -- [0x004000cc]
X"00000000", -- [0x004000d0]
X"00000000", -- [0x004000d4]
X"00000000", -- [0x004000d8]
X"00000000", -- [0x004000dc]
X"00000000", -- [0x004000e0]
X"00000000", -- [0x004000e4]
X"00000000", -- [0x004000e8]
X"00000000", -- [0x004000ec]
X"00000000", -- [0x004000f0]
X"00000000", -- [0x004000f4]
X"00000000", -- [0x004000f8]
X"00000000" -- [0x004000fc]
);
begin
PROM_READ:
dout <= word_array(to_integer(addr));
end itest;